What is the primary difference between a suction and a delivery hose in this standard?

Suction hoses have a rigid helix reinforcement to resist collapse under vacuum, while delivery hoses typically use braided polymer reinforcement to withstand internal pressure.

What is the required vacuum test pressure for a suction hose?

The hose must withstand a vacuum of not less than 650 mm of mercury without kinking or collapsing (Clause 8.3).

Can these hoses be used for drinking water?

No, this standard is for agricultural applications. Hoses for potable water must comply with different standards, like IS 12585.

What information must be marked on the hose?

The hose must be marked with the manufacturer's name/trademark, nominal bore, type (suction/delivery), maximum working pressure, and the Standard Mark (ISI mark) (Clause 9).

IS 15265

: 2003

Flexible PVC Pipes or Polymer Reinforced Thermoplastic Hoses for Suction and Delivery Lines of Agricultural Pumps - Specification

CurrentSpecializedSpecificationBIMMaterials Science · Plastic Piping System

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This standard specifies the material, dimensional, and performance requirements for flexible PVC and polymer-reinforced thermoplastic hoses. These hoses are intended for use as suction and delivery lines with agricultural pump sets.

Flexible PVC Pipes or Polymer Reinforced Thermoplastic Hoses for Suction and Delivery Lines of Agricultural Pumps - Specification

Quick Reference Values

Vacuum resistance for suction hosesNot less than 650 mm of mercury

Typical working pressure range for delivery hoses3 to 10 kgf/cm²

Adhesion strength between layersMinimum 1.5 kN/m

Maximum change in length after pressure test± 5 percent

Opacity requirementLight transmission not more than 0.2 percent

Recommended service temperature range-5°C to 60°C

Practical Notes

Ensure correct hose type is used; suction hoses (with rigid helix) are for negative pressure, while delivery hoses (with braided reinforcement) are for positive pressure.

The standard distinguishes between hoses with a rigid PVC helix (for suction) and those with polymer reinforcement (for delivery), which have different performance tests.

Compatibility with hose clamps and fittings is critical for a leak-proof connection and is not covered by this standard, requiring user verification.